Building controller and interphone system

1. An intercom system which is to be used in an apartment complex which is configured by a plurality of residential buildings and a centralized building that can communicate with the residential buildings, wherein each of the residential buildings includes: residential room master devices which are disposed in residential rooms, respectively; a plurality of terminal devices which can communicate with the residential room master devices; and a building controller which communicably connects the residential room master devices of the residential rooms in an own building, with the plurality of terminal devices, and the building controller has: first identification information that, when the centralized building is called by one of the residential room master devices via the building controller, is used in recognition in which the centralized building recognizes the building controller; and second identification information that, when the centralized building is called by one of the residential room master devices via the building controller, is used in recognition in which the one residential room master device recognizes the building controller as a virtual terminal device that is different from the plurality of terminal devices.

2. The intercom system according to claim 1 , wherein the building controller is configured so that the residential room master device of each of the residential rooms in the own building, and the plurality of terminal devices are communicably connected to each other via an intercom line, and the plurality of residential buildings, and the centralized building are connected to each other via a network in which communication is performed in accordance with a general-purpose protocol.

3. The intercom system according to claim 2 , wherein the building controller of each of the plurality of residential buildings has: a first converting section which performs a process of converting a signal that can be communicated via the intercom line in the own building, to a signal that can be communicated via the network in accordance with the general-purpose protocol; and a second converting section which performs a process of converting a signal that can be communicated via the network in accordance with the general-purpose protocol, to a signal that can be communicated via the intercom line in the own building.

4. The intercom system according to claim 1 , wherein the plurality of terminal devices contain a collective entrance device, and, when the centralized building is called by one of the residential room master devices via the building controller, the second identification information is used in recognition in which the one residential room master device recognizes the building controller as a virtual collective entrance device that is different from the collective entrance device.

5. The intercom system according to claim 1 , wherein the plurality of terminal devices contain a management room master device, and the building controller has third identification information that, when the centralized building is called by the management room master device via the building controller, is used in recognition in which the management room master device recognizes the building controller as a virtual management room master device that is different from the management room master device.

6. A building controller wherein the building controller has the first identification information and second identification information which are as defined in claim 1 .